Incubator.



No. 664,657. Patented Dec. 25, |900. J. L. MACY.

INCUBATDR.

:Application filed May 3, 1898.1

3 Sheets-Sheet l.

(No Model.)

ma mams Fzrsns co.. mofa-Undo., WASHINGTON, nA c.

No. 664,657. Patented Dec.'2'5, |900.

J. L. MACY.

INCUBATOR.

(Application led May 3, 1898.)

(No Model.)

3 Sheets-Sheet 2l.

No.,664,657. Y Patented nec. 25, |900. J. L. MACY.

INCUBATQR..

Application med my a, lass.) (No Model.) 43 Sheets-Sheet 3.

mg cams PETERS oo.. Puowu'wo., msnmmon. nA c UNITED STATES JETHRO L. MACY, OF

PATENT OFFICE.

DEs MOINES, IOWA.

INCUBATOR.

SPECIFICATION forming part of Letters Patent No. 664,657, dated December 25, 1900.

n Application filed May 3, 1398. Serial No. 679,598. (No model.)

To all whom, t 11u03/ concern:

Be it known that I, JETHRO L. MACY, a citizen of the United States of America, and a resident of Des Moines, Polk county, Iowa, have invented certain new and useful Improvements in Incubatore, of which the following is a specification.

The object of this invention is to provide improved means for incubating eggs, for controlling the circulation of air within an incubator, for regulating the heat disseminated in an incubator, and for determining'and controlling the degree of moisture in an incubator.

My invention consists in the construction, arrangement, and combination of elements hereinafter set forth,pointed out in my claims, and illustrated by the accompanying drawings, in which- Figure l illustrates a central vertical longitudinal section of my apparatus. Fig. 2is a plan, part of the top being broken away, of my improved hot-air tank detached from the apparatus. Fig. 3 is a perspective of the complete apparatus in position for use, the door being open to reveal the interior of the egg-chamber. Fig. 4 is a perspective, partly in section, illustrating a modiiied form of construction of my improved hot-air tank detached from the apparatus. Fig. 5 is an inverted perspective of the preferred form of hot-air tank and connected devices, partly in section to illustrate the communication between the hot-water tank and the moistureduct. Fig. 6 is a plan of the complete apparatus. Fig. 7 is a cross-section of the hot-air tank on aline near the chimney and illustrates the relative positions of the chimney, the hot air pipes communicating therewith, and the vents whereby the used air is discharged from the hot-air tank.

In the construction `of the apparatus, as shown, the numerallOdesignates the casing, mounted on legs Il. A hotair tank I2 is horizontally positioned in the upper portion of the casing IO, and a packing of mineral wool is interposed between the top of the tank and the top of the casing. The tank 12 is formed as a hollow rectangle, and the portion 12a thereof in front of the opening therein is of greater width than the portion l2b thereof at the rear of the opening and is located adjacent to the door I3 of the incubator. The central opening of the hot-air tank is shown covered by a plate 14, overlapping the edges thereof and parallel with the top of the casing 10; but the plate I4 may be replaced by the top plate of the tank being continued across the center thereof, if desired, or the bottom plate of the tank may be continued across.

A chimney l5 is positioned vertically in the right end of the casinglO and traverses, and is soldered to the right end portion of the hotair tank I2. The chimney l5 projects from the casing at each end. A heating-lamp (not shown) may be located beneath the lower end of the chimney l5 and the upper end of the lamp-chimney extended within the same,as is common in this class of apparatus.

A hot-air pipe 16 is mounted centrally in and extends longitudinally of the portion 12b of the tank l2, has its terminal near the left end of the tank, is bent at right angles near the right end of the tank, and communicates at its initial end with the chimney I5. Both ends ofthe pipe 16 are open. A hot-air pipe 17 is mounted centrally in and extends longitudinally of the portion 1.2a of the tank 12, has its terminal near the left end of the tank, is bent at right angles near the right end of the tank, and communicates at its initial end with the chimney 15. Both ends of the pipe 17 are open.

A regulating-lever 18 is fulcrumed in a stand 19 on the top of the casing 10 and carries a cap 2O on one end and a poise 2l on the other end, the cap resting at times on the upper end of the chimney I5 and risingand falling relative thereto in the oscillation of the lever. A plate 22 is fixed to the lever 18, immediately in front of the fulcrum-point thereof, and au actuating-rod 23 engages said plate at its upper end, extends downwardly therefrom through the top of the casing l0 and central opening of the tank l2, and rests atits lower end in a socket centrally located on the top of a thermostatic cell 24. A bolt 25 is xed to and extends downwardly from the center of the cell 24. and is secured in an angle-iron bracket 26, fixed to the inner face of the rear wall of the incubator.

Openings 27 28 are formedin the right corners of the top plate of the tank 12, and pipes 27b 28", Fig. 7, are inserted in said ropenings and communicate with the outer air through the top of the casing 10.

An egg-tray 29 is removably and replaceably mounted horizontally on cleats 30 3l, positioned transversely of the interior of the incubator.

A Ventilating-pipe 32 is positioned vertically and countersunk in the left end of the incubator-chamber and extends from the bottom thereof at the left of the eggtray and hot-air tank through the top of the casing l0. The pipe 32 is chamfered at its lower end to provide an opening at the bottom of the cham; ber to receive the discharging air therefrom.

An annular tank 33 is located in the right end of the incubator, approximately concentric with and spaced apart from the chimney 15, and extends vertically from the bottom of A the tank 12 through the bottom of the casing 10. The tank 33 is closed at its bottom, arranged to receive water through a supplypipe 34, traversing the top of the casing, and discharge the same through a faucet 35. The upper end of the tank 33 abuts the bottom of the hot-airtauk l2and is provided with openings 33, one of which is shown in Fig'. 5, front and rear, adjacent thereto. The openings 33a in the upper part of the tank 33 communicate with the initial ends of moisture pipes or ducts 36, Fig. 4 and dotted lines Fig. 2, which ducts lead rearwardly and forwardly from the tank 33 along the bottom of the air-tank 12, are bent at right angles and extend along the bottoms of the portions 12a 12b of the air-tank, and discharge above the egg-tray 29 near the left end of theincubatorchamber. YCleats 37, dotted lines Fig. 1, are mounted in and transversely of the upper portions of the terminal openings of the ducts 36 to limit and retard the discharge therefrom, and a plurality of perforations or apertures 38 are formed in the adjacent sides of the ducts to dischargel moisture into the egg or incubator chamber.

The door 13 of the incubator is formed with.

a frame rabbeted in its outer edge to fit rabbets formed in the jambs 39, and the jointA between the frame or sash and the jambs is packed with a strip 40 of felt, glued to the door-frame. to the lower jamb, and the upper margin thereof is secured byva turn-button 41 on the upper jamb,'a knob 42 being provided on'the frame for manual use in opening and closing the door. The door-frame is rabbeted on opposite sides of its inner margins to receive panes of glass 43 44, retained therein in parallel planes by beads or moldings 45 46, `tacked to the frame, thus providing a deadair space or double construction with a single door.

In the construction of the air-tank,as shown inLFig. 3, a partition 47 is mounted inthe right end of the portion 12, and a single pipe 17 a leads from the chimney 15a and discharges The frame of the door is hingedthrough said partition, the hot airtraversing .Y the tank and escaping through a single vent Y 27a at the farthermost corner of the tank. V'f7ojf'i;A In the Aprovision of the central opening in j v the hot-air tank I provide against Voverheat;V ing the centralportion of theincubator-cham ber and at the same time supply sucient heat entirely around and in the outer por- '@V Y tions of the chamber, which inevitably finds its way to the center in sufficient and desir-n able degree. Y 2;'V In the provision of Ya greater 'widthof the Y j portionof the tank 12 adjacent to the doorclrrr 13 I compensate for possible draft and cold c Y radiation through the door and offset the undesirable eeets of opening the doorfor nec- Y essary'examination and turning of :thee'ggai In the provision of the Ventilating-,pipe 32,YV 857.gif leading from 4the bottom o`f the chamberV4 i through the top thereof, I 'insure'thep'e1`-`fe it and thorough circulation of 'the imistire-Y ladenair entering from the top of the tank33(V I am aware that a Vtank similar to myWa-'go'g Y l5 ter-'tank 33 heretofore has Ibeen employed to i3' supply a Vhot-'water system in incubatore Y. heated bythe radiation from coils of pipei' I do not claim such construction. I claim as my invention- :$95YV 1. In an incubator, Vthe combination 'df Va fr# Y casing,an egg-tray therein,and a'hotl'a'irt'ank in the upper portion of the casing, which tankV is formed with a central openingito lessentlieV I radiating area thereof, a chimney traversing VVroo.'Y Y and s'urroundediby one end'portiono't` the'iri 1 2 "Y tank, pipes 16, 17 leadinglaterally'from'the chimney, bent at right angles and extended in parallel planes on opposite sidesof ithe i central opening nearly'tothe oppositeendiof lro5 the air-tank and terminating with open ends within the tank and vent-pipes leading from j the air-tank adjacent to 'the elbows of the'j i pipes 16, 17. Y L fw 2. A hot-air tank :formed as a hollowfrecff.171,9.VV tangle, the front sidel portion of said taxik l f; being greater in width than the other, in corn-v v bination with a casing to receive said'tank, n Y a door inthe casing,'the widest portion'offthe .Y Y tank being located adjacent the door,.andI5 means for supplyingheated air tothe tank.V 3. In an incubator the combination of'tlie casing, a chamber'in the casing, an egg-"tray in the casing, a ventilator-pipe inthe casing, 'Y 5 V a hot-air tank in the casing-chamber above z''" the tray, which tank is provided with an aperl. ture vertically in one end'portion "thereoffa chimney mounted vertically iniand 'ezft'ending through the casing-chamber andf travers- Y Y ing the aperture in the end portion ofthe air- V125 5 tank,pipes aording communication between V the chimney and the interior of Vtheairtank,YV vent-pipes aording communication" between 'i Y the air-tank and the outside'of'the casing,"a Y. water-tank of annular form surroundingfthe 13o lower portion of the chimney and dependin'gfi f y from the air-tank, the waterltan'kV being opien' atits top and'commnnicatingwiththe "hailV j i' ber in the casing, a pipe formed on the lowerjY face of the hot-air tank and communicating ney, air-pipes in the tank and communicat- Wibh the open end of the Water-tank and open ing at one end each with the chimney and at its other end Within the chamber, which open ai; lohe other end Within the tank and pipe is perforated laterally WiLhin the eham- Vent-pipes leading from the tank.

5 ber,a thermostat controlling the draft, through Signed by me at Des Moines, Iowa, this x 5 the chimney and means for heating the water 30th day of March, 1898.

in the Water-tank and the air in the chimney. JETHRO L. MACY.

4. An air-tank for incubatore formed as a Witnesses: hollow rectangle, and provided with a Vertai- THOMAS G. ORWIG,

1o cal aperture near one end to receive a chim- S. C. SWEET. 

